Definition of "lowing"

But little Lord Jesus, no crying he makes.

a. 1882, anonymous, "Away In a Manger"

And Samuel said, What meaneth then this bleating of the sheepe in mine eares, and the lowing of the oxen which I heare?

1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], 1 Samuel 15:14

Nor is Oſiris seenIn Memphian Grove, or Green,Trampling the unſhower'd Graſſe with lowings loud:

1629, John Milton, “On the Morning of Christs Nativity”, in Poems of Mr. John Milton, […], London: […] Ruth Raworth for Humphrey Mosely, […], published 1646, page 11

[…] the herd of four or five hundred cattle trotting homewards with loud lowings and bellowings […]

1918, William Henry Hudson, Far Away and Long Ago